Time flies by fast vs time flies by fastly

The correct phrase is 'time flies by fast.' The adverb 'fast' is used to modify the verb 'flies' to indicate the speed at which time passes. 'Fastly' is not a standard adverb in English, so it is incorrect to use it in this context.

Last updated: March 26, 2024 • 485 views

Time flies by fast

This phrase is correct and commonly used in English.

This phrase is used to express how quickly time passes.

Examples:

Time flies by fast when you're having fun.
I can't believe how time flies by fast during the holidays.
Time flies by fast when you're with good company.
It's amazing how time flies by fast when you're busy.
Time flies by fast when you're enjoying what you're doing.

Show examples from the web [+]

With three kids, time flies by.
Madam President, Commissioner, in this House, time flies by irretrievably.
This is really making the time fly by.
Time flies by like a shooting arrow
Many people complain about having to do a long drive, but on this one, we really had hit on a brilliant way of making the time fly by.
This'll make the time fly by, won't it?
Time Flies By At Home After A Shift
Defenestrate your clock to see how time flies.
George Romero's classics fly by.
The older you get, the faster time flies until months pass like days.
Time flies when I'm baking.
Inside the OR, the best surgeons make time fly.
The bad news is that time flies.
Time flies when you have a child.
Time flies when you're playing games.
It's crazy how time flies.
Bringing him up, his husband's businesses... time flies.
He wanted to see time fly.
Time flies when every day's the same.
Time flies swiftly In this garden of learning

time flies by fastly

This phrase is incorrect in English. 'Fastly' is not a standard adverb and should not be used in this context.

Show examples from the web [+]

With three kids, time flies by.
Madam President, Commissioner, in this House, time flies by irretrievably.
This is really making the time fly by.
Time flies by like a shooting arrow
Many people complain about having to do a long drive, but on this one, we really had hit on a brilliant way of making the time fly by.
This'll make the time fly by, won't it?
Time Flies By At Home After A Shift
Defenestrate your clock to see how time flies.
George Romero's classics fly by.
The older you get, the faster time flies until months pass like days.
Time flies when I'm baking.
Inside the OR, the best surgeons make time fly.
The bad news is that time flies.
Time flies when you have a child.
Time flies when you're playing games.
It's crazy how time flies.
Bringing him up, his husband's businesses... time flies.
He wanted to see time fly.
Time flies when every day's the same.
Time flies swiftly In this garden of learning

Alternatives:

time flies by quickly
time passes quickly
time goes by fast
time goes by quickly
time flies by rapidly

What Our Customers Are Saying

Our customers love us! We have an average rating of 4.79 stars based on 283,125 votes.
Also check out our 2,100+ reviews on TrustPilot (4.9).

"Thank you!"
Sachi Nakama July 2024
"I have literally been through chat, PI, claude, bard and bing and I got conflicting answers! Thank you! Human intelligence reigns!"
Retha July 2024
"Faster than AI"
CYNTHIA December 2023
"This was very helpful and I personally think this site is the best."
Kaden October 2023
"It was extremely thorough and very helpful!"
imperialelisa October 2023
"7 years without any disappointment. Always 100% satisfied. You guys are the best in the world at what you do. Thank you so much :)"
Zubair Alam October 2023
"In a world of text messages and online communication, this is great to have as a live tool. Thank you."
Selena October 2023
"Without textranch I would be stuck!"
宏祐 October 2023
"Accuracy and fast response. Personal comments from editor. Thank you."
Clh September 2023
"I wasn't aware of this service, it's fascinating and more reliable than standard IA tools available on the internet"
Arturo September 2023
"The fact that you can get reliable fast feedback on your texts."
Vinicius Antonio August 2023
"you guys are better than grammarly i'm being honest here"
ordinary July 2023
"OMG! This is really good than any other text correction tools I've used so far. Highly recommend this."
Vehan July 2023
"Very fast and accurate. thank you."
mojtaba July 2023
"I love this app because it's help to writing skills all of students ♥️"
Tarisini July 2023
"This was exactly the mistake I was looking for, the wording dind´t sound right at first. Better than grammarly!"
Ente July 2023
"The immediate help that I received was reassuring and very satisfactory. Thanks."
priiiyanshuu July 2023
"this helps A LOT for my studies."
kathnunez02 June 2023
"Woow!! I would never have expected such precision! Thank you soooo much!!"
Berta June 2023
"Real Time Editor and not AI. Many Thanks."
Priya June 2023
"The very first thing excites me about Textranch is how much your editors care."
sepideh June 2023
"The fact that texts are checked by human editors rather than by AI, etc. I appreciate this!"
Анна June 2023
"Feel welcome, immediate response, high quality feedback"
martin.roy June 2023
"This is the best app that I have ever seen"
Burulai May 2023

Time flies by fast vs time flies by fastly